cell symbolic matrix into simple symbolic matrix

Hello all,

I am having a cell of 3d symbolic object matrix, but I need to convert this matrix into simple symbolic matrix.

I tried using 'cell2mat' function but it is not helping as this function doesn't help when cell contains symbolic objects.

I need to convert into simple matrix as, I need to perform some multiplication operation on simple matrix, which is not possible if it is in cell form.

Can anyone help me, in this regard.

[Andrei Bobrov]

give a simple example of his cell arrays

[Alok]

lets say: A is a 3d cell matrix of symbolic objects as you mentioned in the previous question using walter'd idea, now

x = sym(0);

A(1:4,1,1:4) = [ {x} {x} {x} {x};

{x} {x} {x} {x};

{x} {x} {x} {x};

{x} {x} {x} {x} ];

Now what I need to do perform some matrix multiplication etc. on this said matrix, so I need to convert it into simple matrix as multiplication addition is not defined in cell matrix, now when I used cell2mat it doesn't work as this function can't convert cell into matrix which have symbolic objects in them.

that is the simplest example I can come up with, hoping it would make my problem clear :)

[Walter Roberson]

duplicate is at http://www.mathworks.com/matlabcentral/answers/19745-converting-a-cell-symbolic-matrix-into-simple-symbolic-matrix

[Alok]

hey walter it is, and sorry for that, i didn't know the pattern about how this forum works, so I thought I must create a duplicate for making it visible to all.. :), but now i know

Answer 1

[Andrei Bobrov]

>> x = sym(0);
A(1:4,1,1:4) = [ {x} {x} {x} {x}; 
{x} {x} {x} {x}; 
{x} {x} {x} {x}; 
{x} {x} {x} {x} ]
A(:,:,1) = 
    [1x1 sym]
    [1x1 sym]
    [1x1 sym]
    [1x1 sym]
A(:,:,2) = 
    [1x1 sym]
    [1x1 sym]
    [1x1 sym]
    [1x1 sym]
A(:,:,3) = 
    [1x1 sym]
    [1x1 sym]
    [1x1 sym]
    [1x1 sym]
A(:,:,4) = 
    [1x1 sym]
    [1x1 sym]
    [1x1 sym]
    [1x1 sym]
>> A1 = squeeze(A)
A1 = 
    [1x1 sym]    [1x1 sym]    [1x1 sym]    [1x1 sym]
    [1x1 sym]    [1x1 sym]    [1x1 sym]    [1x1 sym]
    [1x1 sym]    [1x1 sym]    [1x1 sym]    [1x1 sym]
    [1x1 sym]    [1x1 sym]    [1x1 sym]    [1x1 sym]
>> A2 = reshape([A{:}],size(A1))
A2 =
[ 0, 0, 0, 0]
[ 0, 0, 0, 0]
[ 0, 0, 0, 0]
[ 0, 0, 0, 0]
>>

[Alok]

the final obtained A2 is matrix of symbolic objects ?

[Alok]

awesome andrei, thanks a lot.....